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Every crop protection product has its own pre-harvest interval (PHI) — which is the time required between spraying and cutting the crop. PHI is also often different for the same product used on different crops…
Canola Watch Posts
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Scout lygus at late flowering and podding stages using a standard insect net of 38 cm (15") diameter. Take ten 180° sweeps, and aim to sweep the flowers and pods while moving forward. Count the number of lygus in the net… -
Flea beetles feeding on canola leaves and pods are unlikely to cause an economic loss. Numbers have to be very high – perhaps 100 per plant – before economic losses occur…
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In the weeks leading up to harvest, growers may have some times to review their notes, or finalize their notes, on the season so far. Accurate notes on seeding date, rate, fertilizer, weather, pest observations, crop stand, in-crop actions (dates, rates, products) and more will be invaluable for winter planning and management decisions in future years…
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Manitoba: Three insects to look for on canola pods Saskatchewan: Three insects to look for on canola pods Alberta: Map of the Week - Days above 30°C…
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The three most common pod munchers are bertha armyworm, diamondback moth larvae and lygus bugs. Hot spots can sometimes be isolated to specific fields, so check each field. Before spraying, make sure insects counts are at or above economic thresholds. Applications made when insect numbers are below thresholds will not provide a positive return on investment and can do unnecessary… -
Scout for bertha armyworm, lygus bugs and diamondback moth larvae on pods, but only spray if insects counts are at or above economic thresholds. Try this quiz to brush up on thresholds… -
I has been a hot growing season so far, as shown on this map. Hot days will be a major reason for missing pods this year… -
The combine optimization tool at www.canolacalculator.ca will help farmers set the combine to keep losses as low as possible while finding a balance with productivity and grain quality…
